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Table 4 Relationships between the identified and manual wheat ear counting for the three data sets

From: Wheat ear counting using K-means clustering segmentation and convolutional neural network

Sites Dataset Samples size Slope Intercept RMSE (ears) R2 RRMSE (%) Bias (ears)
Xuchang Test 60 0.97 8.53 0.03 0.97 0.01 1.40
May 6 10 0.88 41.25 22.54 0.82 9.43 6.90
May 14 10 0.82 47.97 16.10 0.93 8.26 11.60
May 16 10 0.85 46.10 10.30 0.84 3.54 2.90
May 20 10 0.91 21.79 3.24 0.99 1.39 0.10
All dates 40 0.88 34.68 14.87 0.92 6.21 7.10
UAV 20 0.87 18.52 9.47 0.97 5.40 -5.00
All 120 0.97 9.05 10.84 0.96 4.63 2.24
  1. The K-means-CNN counting was highly correlated with manual counting